package com.kobe.tokendemo.interceptor;


import com.kobe.tokendemo.utils.JWTUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.PrintWriter;

/**
 * 创建 JYQ  on  2018/11/1,15:55
 */
@Component
public class InterceptorConfig implements HandlerInterceptor {
    private static final Logger log= LoggerFactory.getLogger(InterceptorConfig.class);


    /**
     * 进入controller层之前拦截请求
     * @param httpServletRequest
     * @param httpServletResponse
     * @param o
     * @return
     * @throws Exception
     */
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {

        log.info("---------------------开始进入请求地址拦截----------------------------");
        try {
            String authentication = httpServletRequest.getHeader("Authentication");
            String token = JWTUtils.autoRequire(authentication);
            httpServletResponse.addHeader("Authentication",token);
            return  true;
        } catch (Exception e) {
            e.printStackTrace();

            throw  new NullPointerException("kongzhizhen");
        }
    }



    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
        log.info("------处理请求完成后视图渲染之前的处理操作-----------");
    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
        log.info("---------------视图渲染之后的操作-------------------------0");
    }

}
